Wallspike tweaks
Sorry, MI. You told me to test the objects via objectplace, and they worked fine there - but @FuriousFox had some [issues](http://i.imgur.com/DQuLYzz.png) when he finally got to place them via mapthing.
Specifically, I think the problem this was caused by was a straight up copypaste of the "height" attribute of MT_SPIKE into the "radius" field of MT_WALLSPIKE, when it should technically be half that to match the intended collision box. Some other stuff also got adjusted to match when I solved this.
FF's happy now - they work well enough to place, even if their [collision is a little wonky](http://i.imgur.com/o2rG0tV.gifv), but that's an MF_PAPERCOLLISION issue and more than a quick fix to be done in an evening.
Nab ```<root>/!LatestSRB2Files/srb2win_branch_spikefix.exe``` to test.
UPDATE:
* Support for MF_PAPERCOLLISION tmhitthing in P_SlideMove.
* Knockback for wallspikes is much more consistent, fixing FF's gif as posted above/below.
* Optimised away a FixedDiv call when determining the slopetype of a line.
* Changed the position of the wallspike base slightly.
* Made it so NOTHING can step up onto the player outside of other players, essentially killing a bunch of springs-launch-with-players style bugs. (I was able to recreate that issue with the wallspikes until I added this, which is why I did it in this branch.)
* Wallspikes are now bustable.
* Invert the solidity mapthing flag for spikes and wallspikes.
* Improve the frame arrangement for vertical spikes' spriteset. (Requires new patch.dta)
* Make all spikes consistently do damage with DMG_SPIKE.
* (unrelated) renamed "flame stomp" to "elemental stomp" in P_HitDeathMessages.
* (unrelated) Make gas jets not make noise if they have the ambush flag, per Sphere's request.
See merge request !107
* Fix an issue where everyone being game overed except for one person, and then kicking that one person, meant the game over trigger was never met.
* Fix an issue where the spectator text could be overridden with a count of the number of remaining players to complete the level.
* Fixed a few glitches with spinning. (Unrelated to the branch, but exposed through new_coop testing.)
* Support for MF_PAPERCOLLISION tmhitthing in P_SlideMove.
* Knockback for wallspikes is much more consistent.
* Optimised away a FixedDiv call when determining the slopetype of a line.
* Changed the position of the wallspike base slightly.
* Made it so NOTHING can step up onto the player outside of other players, essentially killing a bunch of springs-launch-with-players style bugs. (I was able to recreate that issue with the wallspikes until I added this, which is why I did it in this branch.)
* Crash prevention if total somehow becomes zero.
* Don't waste time multiplying and demultiplying the HUD check if it's just gonna net you the same number.
* Hide the individual lives on the tab menu whenever they're irrelevant.
* Make co-op spectators appear on the tab menu.
* Hide one frame of spectatorhood stuff in splitscreen.
* Fix joining netgames whilst in a special stage not giving the startinglives.
* Make monitors that don't appear to do anything play the failure sound.
* Only make players flash if they're REspawning, rather than spawning into a fresh level - unless it's a NiGHTS level, in which case never.
NEW COOP BASED:
* Add "Infinite" option to cv_cooplives, inspired by SUBARASHII. Lives still exist, but are hidden from the player's view, and are prevented from falling below 1 at any cost. As a result, made the variable CV_CHEAT.
OTHER MULTIPLAYER BASED (semi-related):
* Made cv_autobalance an on/off switch which determines the allowed difference based on the number of people in the server, instead of a weird and opaque number from 0-4.
MENU BASED (not related):
* Add horizontal arrows to menu options which respond to the arrow keys.
* Make the menu arrows bob.
* Switch out the seperate arrows for combination arrows on the joystick menus.
* Minor cvar description tweaks.
****
* MF2_MACEROTATE. Apply to any object. Replaces the indiscriminate spamming of A_MaceRotate each tic.
****
* Mace point mapthings have been slightly modified.
- MTF_AMBUSH: bigger luke theory (has no effect on custom mace, different effect on spring mace)
- MTF_OBJECTFLIP: flips the objects, but nothing else - just so it doesn't look out of place in gravflip sections
- MTF_OBJECTSPECIAL: keeps it from attempting to play swinging sounds
- angle: tag of controlling linedef
- parameter: number of "spokes" minus one - for example, a parameter of 2 results in 3 equidistant maces rotating around the same point.
****
* Mace linedefs have been significantly revamped.
- line dx: number of chain links
- line dy: speed (in FU)
- frontside floor height: Pitch (in degrees; how much it "tilts" over - Yaw influences the axis it's tilting on)
- frontside ceiling height: Yaw (in degrees; rotation of entire thing on xy plane)
- frontside x offset: Phase (in degrees; how far it is through the rotation cycle)
- frontside y offset: Max speed (in FU; if less than speed, set to speed*2)
- backside floor height: Pinch (in degrees; 0 if no backside; essentially makes rotation conical instead of wheel-like)
- backside ceiling height: Roll (in degrees; 0 if no backside; rotates on the axis of the spinning - identical to Phase for spinning maces, but useful for rotating swinging maces as opposed to just offsetting them)
- backside x offset: Number of "antispokes" (0 if no backside; makes that many spokes not exist so you can put another mace/chain type in there instead; for combo mace/chain instead turns them into chains directly)
- backside y offset: Width (in number of extra chains per side; 0 if no backside; creates a "skiprope" arrangement)
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- ML_NOCLIMB: for chains and chain-mace combos, allow for player control of yaw through strafe keys
- ML_EFFECT1: replacing the seperate mapthings, this makes a mace type swing instead of spin.
- ML_EFFECT2: for all spokes of the mace wheel ending in maces, make the chains out of the mace type (inverted for firebars)
- ML_EFFECT3: spawn a bonus mace type at the center(s) of rotation
- ML_EFFECT4: don't clip inside ground
****
* Mapthing 1104 represents both spinning and swinging maces from prior versions of SRB2.
* Mapthing 1105 has gone from being a swinging mace variant to a combination of chains and maces in a single unit, provided the number of "spokes" is greater than one.
* Mapthing 1105 has gone from being a swinging chain variant to a vertical spring-on-a-ball-on-a-chain. Yellow by default, apply MTF_AMBUSH to turn into a red spring.
* Mapthing 1107 represents both spinning and swinging chains from prior versions of SRB2.
* Mapthing 1108 is completely untouched except to port over 2.1's functionality to the new backend.
* Mapthing 1109 is a Mario castle-level style firebar. This inverts the functionality of ML_EFFECT2 on the tagged linedef.
* Mapthing 1110 is a free slot should we want to implement another type of base-game mace.
* Mapthing 1111 is a custom mace. Use the linedef's frontside texture slots to identify a macetype mobjtype, then use the backside texture slots to identify a linktype mobjtype (defaults to MT_NULL if no backside).
****
Whooh. Requires new patch.dta for sprites.
* Gave lifedistribution a "Sharing" option to go along with its previous individual and stealing options.
* Made the game over graphic and music only happen if everyone's out of lives if you're sharing or stealing lives.
* Fixed a bug where game over wouldn't come to fruition because it kept on happening each tic of the countdown2.
* Made spectator stuff display in Co-op splitscreen.
* Make setting steallives to true respawn every game overed spectator.
* Make a minimum on the number of lives GetLives can get you.
* Add "You'll steal a life on respawn" to spectator screen.
* Make sure that a life theft always takes you from 0 (or less) lives to 1 life.
* Fix a bracket level typo that meant new Co-op style respawning was being done for all gametypes.
* P_GiveCoopLives bundles the coop lives reward for everyone versus reward for one person in other gametypes thing into one function. Available in Lua.
Needs a bunch of changes to HUD rendering, especially in splitscreen, which doesn't try to show spectator stuff whatsoever. Also, if you're the player whose respawn determines when the map reloads, you'll see the spectator text during the front half of the fade. Unless, of course, it's 2-player mode.
* cv_sharedstarposts - Makes everyone share starposts, defaults to "On"
* cv_respawntype - Defaults to "Starpost". If set to that, people respawn at the starpost you just hit (assuming cv_sharedstarposts is on - may have to combine the two variables later, but seperate for testing for now). The other option is the old, unrestricted spawning. We COULD add TD bubble spawning at a later time using this variable, though.
The level DOES reset if everyone dies, but not in a way which allows for Mystic Realm style non-resetting resets. I'll handle that later.
* Serious refactor of - and internal exposure of - what has become S_StartCaption().
* Renaming of a few existing captions.
* The prevention of access to - or writing over - sfx_None's stuff in SOC or Lua.
* The new Lua wrapper function S_StartMusicCaption(string, tics, optional player), which essentially allows custom music captions to be created. (This is best used for stuff like final lap music in SRB2 Kart or bonus time in a thokker-like game, not a comprehensive Now Playing expy. That'd be a different kettle of fish.)
Also, updated all the lock-on stuff to use P_IsLocalPlayer instead of rolling my own.
